- "Master Aphra! I take it by your continued breathing you managed to avoid being backstabbed by that ruffian, Ulbik Tan?"
"Oh, no. He backstabbed me and left me for dead, but I wasn't! Then I backstabbed him and left him for dead, but he is!"
- ―0-0-0 and Aphra on Ulbik Tan
Ulbik Tan was a male human described as a ruffian by 0-0-0 who at some point following the hijacking of the Executor left Doctor Aphra for dead after backstabbing her. However Aphra survived and in return backstabbed Tan leaving him for dead, where Tan's attempt failed Aphra's succeeded as Tan died.
- Doctor Aphra 1: Book I, Part I (First appearance)